Overview

Energy conversion efficiency is not defined uniquely, but instead depends on the usefulness of the output. All or part of the heat produced from burning a fuel may become rejected waste heat if, for example, work is the desired output from a thermodynamic cycle. Energy converter is an example of an energy transformation. For example a light bulb falls into the categories energy converter.
Even though the definition includes the notion of usefulness, efficiency is considered a technical or physical term. Goal or mission oriented terms include effectiveness and efficacy.

Generally, energy conversion efficiency is a dimensionless number between 0 and 1.0, or 0% to 100%. Efficiencies may not exceed 100%, e.g., for a perpetual motion machine. However, other effectiveness measures that can exceed 1.0 are used for heat pumps and other devices that move heat rather than convert it.

Latest News for: energy efficiency

Making a home more energy-efficient is not only good for the environment, it can reduce energy bills by up to 40 percent. Begin with an energy audit, which is an assessment by a certified professional who will determine how energy-efficient a home is and what can be done to make it more so....

Xylem President and CEOPatrick Decker spoke about how honored the company is to have the opportunity to begin exploring solutions for the region, notably non-revenue water, knowledge sharing, and creating more water and energyefficiencies to maximize resources and lessen impact on the environment....

Video... Excreting urine and feces is a biological function, but it's also a physical action, using energy and specially-made structures to move solids and liquids around ... Biomimicry is particularly useful when designing systems to be more energyefficient and less wasteful. What is a more efficient user of solar energy than a blade of grass? ... .......

Originally, the resort wasn't scheduled to open until Dec. 14 ... this Friday Nov. 23, through Sunday ... 30-Dec ... Sunlight upgraded some of its snowmaking infrastructure, including piping and purchase of new energyefficient snowmaking guns for better snowmaking ... "We have a little more water at our disposal, plus more efficient and productive snowmaking heads....

The kitchen may be the heart of the home, but the great room is your home’s face. (Shutterstock) ... And voila! The open-concept house was born ... No end to open season ... window seats ... Formality ... Speaking of windows, energyefficiency is a major selling point for buyers, as are the smart home features that can control lighting, temperature, and security....

Their vision is to transform the local energyefficiency market and stimulate home and business energy improvements through access to information, capital and a skilled workforce ...Typical barriers to learning about the energyefficiency of your home includes cost, but with county ......

The Treasury noted that carbon offset projects would generate sustainable development benefits and employment opportunities by encouraging investments in energyefficiency and renewable energy, rural development projects, and initiatives aimed at restoring landscapes, reducing land degradation and biodiversity protection....

French firm Engie said it had decided against selling off the Rugeley site in Staffordshire and would instead build super efficient houses on the 139-hectare site as part of its bid to “move beyond energy”....

The good news is that there are steps you can take to help lower your energy costs ...There are also a number of steps you can take to help conserve energy. When you are upgrading your appliances you should look for those that carry the ENERGYSTAR® label to assure you are purchasing the most energyefficient products on the market....

FlexPower Modules introduces its first generation of DirectConversion products to address the growing need for higher energyefficiency levels in data center and cloud computing infrastructure ... as well as enabling increasingly stringent energyefficiency guidelines to be met....